Oriented carbon nanostructures grown by hot-filament plasma-enhanced CVD from self-assembled Co-based catalyst on Si substrates
Physica E: Low-dimensional Systems and Nanostructures(2012)
摘要
We report the synthesis of coral- and caterpillar-like carbon nanostructures assemblies starting from cobalt nitrate ethanol solutions deposited by drop-casting onto blank or carbon nanoparticles film covered Si(100) substrates. The seeded films were pre-treated with glow discharge hydrogen plasma aided by hot-filaments at 550°C followed by introduction of acetylene at 700°C. The resultant carbon nanostructure assemblies contain a high density of aligned carbon nanotubes/nanofibers (CNTs/CNFs). The influence of the forces that act during liquid-mediated self-assembly of Co catalyst precursor is discussed.
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关键词
carbon nanostructures,hot-filament,plasma-enhanced,self-assembled,co-based
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